package gowcage.utils;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Rect;
import android.util.DisplayMetrics;
import android.view.View;
import android.view.WindowManager;

/**
 * Created by Administrator on 2017/4/13.
 */

public class ScreenUtils {

    /**
     * 获取屏幕宽度
     */
    public static int getScreenW(Activity activity) {
        DisplayMetrics dm = new DisplayMetrics();
        WindowManager wm = activity.getWindowManager();
        //获取屏幕信息
        wm.getDefaultDisplay().getMetrics(dm);
        return dm.widthPixels;
    }

    public static int getScreenW(Context context) {
        DisplayMetrics dm = new DisplayMetrics();
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        //获取屏幕信息
        wm.getDefaultDisplay().getMetrics(dm);
        return dm.widthPixels;
    }

    /**
     * 获取屏幕高度
     */
    public static int getScreenH(Activity activity) {
        DisplayMetrics dm = new DisplayMetrics();
        WindowManager wm = activity.getWindowManager();
        //获取屏幕信息
        wm.getDefaultDisplay().getMetrics(dm);
        return dm.heightPixels;
    }

    public static int getScreenH(Context context) {
        DisplayMetrics dm = new DisplayMetrics();
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        //获取屏幕信息
        wm.getDefaultDisplay().getMetrics(dm);
        return dm.heightPixels;
    }

    /**
     * 获得状态栏的高度
     */
    public static int getStatusHeight(Context context) {

        int statusHeight = -1;
        try {
            Class<?> clazz = Class.forName("com.android.internal.R$dimen");
            Object object = clazz.newInstance();
            int height = Integer.parseInt(clazz.getField("status_bar_height")
                    .get(object).toString());
            statusHeight = context.getResources().getDimensionPixelSize(height);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return statusHeight;
    }

    /**
     * 获取导航栏高度
     */
    public static int getNavigationHeight(Context context) {
        int resourceId = 0;
        int rid = context.getResources().getIdentifier("config_showNavigationBar", "bool", "android");
        if (rid != 0) {
            resourceId = context.getResources().getIdentifier("navigation_bar_height", "dimen", "android");
            return context.getResources().getDimensionPixelSize(resourceId);
        } else
            return 0;
    }

    /**
     * 获取当前屏幕截图，包含状态栏
     */
    public static Bitmap screenShotWithStatusBar(Activity activity) {
        View view = activity.getWindow().getDecorView();
        view.setDrawingCacheEnabled(true);
        view.buildDrawingCache();
        Bitmap bmp = view.getDrawingCache();
        int width = getScreenW(activity);
        int height = getScreenH(activity);
        Bitmap bp = null;
        bp = Bitmap.createBitmap(bmp, 0, 0, width, height);
        view.destroyDrawingCache();
        return bp;

    }

    /**
     * 获取当前屏幕截图，不包含状态栏
     */
    public static Bitmap screenShotWithoutStatusBar(Activity activity) {
        View view = activity.getWindow().getDecorView();
        view.setDrawingCacheEnabled(true);
        view.buildDrawingCache();
        Bitmap bmp = view.getDrawingCache();
        Rect frame = new Rect();
        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
        int statusBarHeight = frame.top;

        int width = getScreenW(activity);
        int height = getScreenH(activity);
        Bitmap bp = null;
        bp = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height
                - statusBarHeight);
        view.destroyDrawingCache();
        return bp;

    }

}
